ProFTPD 1.2.2rc2, and possibly other versions, does not properly verify reverse-resolved hostnames by performing forward resolution, which allows remote attackers to bypass ACLs or cause an incorrect client hostname to be logged.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This vulnerability has a 12.45% probability of being exploited in the next 30 days, ranking higher than 96% of all scored CVEs.